Bridge-spring for eyeglasses.



110.872,319. PATRNTRD DRG. s, 19o?.

y l L. F. ADT.

RRIDG-R SPRING RoR RYRGLAssRs.

APPLIGATION FILED MAR. 8, 1905.

LEO F. ADT, OIF TROY, N'EW YORK.

BRIDGE-SPRING FOR EYEGLASSES.

Specification of Letters Patent.

Patented Dec. 3, 1907.

Application led March 6. 1905. Serial No. 248.425.

To all 'whom it may concern:

Beit known that I', LEO F. A D'i', oi l`r`oy, in the county of Rensselaer and State of New York, have invented certain new and useful .'Improvements in Bridge-Springs for Eyeglasses; and I do hereby declare the following to be a full, clear, and exact description ofthe same, reference being had to thel accompanying drawings, forming a part of the specification, and the reference-numerals marked thereon.

My present invention relates to improvements 1n mountings for eyeglasses, and the pupose of my invention is to provide a ge spring for connecting the lenses which will possess ample resiliency to insure the proper action of the guards and spring in applying and removing the eyeglasses, and has revision for varying widely the pupillary istance between the lens centers to accominodate the eyeglasses to different persons Without disturbing materially the shape of the bridge` andv which adjustment is secured without rendering the bridge `toolexible as `this would cause instability of the. lenses when the eyeglasses are in osition.

To these and other ends t e invention consists in certain improvements andcombinations of, parts all as will be hereinafter more- "fully described, the novel features being pointed out inthe claims at the end of the specification. l

In the drawings Figures 1 and 2 represent respectively a plan view and a transverse section of mounting embodying my invention; Figs. 3 and 4 represent respectively la lan View and a transverse section of another form of mounting constructed in accordance With my invention; Figs. 5.and 6 represent in plan and section respectively another Way of forming the spring in accordance with my invention; an Figs. 7 and 8 are views in plan and section respectively of a spring similar to that shown in Figs. 5

and 6 adapted for a dierent form of attach- `n devices.

imilar referencenumerals in the several figures indicate similar parts. In the various forms of my invention 1 and 2 designate the lenses provided with the attaching devices 3 and 4 for the guards 5 and the bridge spring, the latter being preferably composed of at material. This spring in the form shown in Figs. 1 and 2 embodies the central portion 6 which is arched forwardly as usual and provided. at

its ends with the horizontal loops orvbendls 7 formed by extending the ends of the s ring rearwardly, thence outwardly and douIili vforwardly latwise of the material, thus exbends 8 forms an attaching arm which eiiters the' vertically-arranged seat 10 of the attaching devices from the bottom thereof and is secured by the usual fastening screw 11, the additional length in the spring formed by the bends 8 being taken up Without increasing the Width of the spring by extending thev materialA around the attaching devices.

In that form of spring shown in Figs. 3 and 4 the ends of the sp are doubled latwise to form thehorizontal oops or bends 7, and the forwardly-extending arms of these horizontal loops or bends are doubled down- Wardly and rearwardly in a direction edgewise of the material to form the vertical loops or bends 12 which lie in planes transverse to the plane of the lenses, the rearwardly-extending attaching arms 13 thus formed in the loops 12 being arranged substantially liorizontally and ada ted to enter the corres )ondingly formecFseats '14 in tlie attaching evices.

In those forms of spring shown in Figs. 5 to 8 inclusive, the central portion is arched forwardly as usual, and the rearwardly-extending'ends of the spring are doubled down- 'I Wardly and thence forwardly edgewise of the material to form the vertical bends or loops 15, the sides of the latter lying in a plane transverse of the lenses. The forwardly-eictending arms of the loops 15 are doubled outwardly and rearwardly to form the horizontal loops .16, the rearwardly-extending arms 17 of these loops being formed for attachment to the attaching devices, a horizontal seat 18 being provided in the attaching de vices in Figs. 5 and 6 for the reception of these attaching arms, and in the form shown in Figs.' 7 and 8 these attaching arms of the spring are' extended outwardly behind the lenses and through the apertured lug 19 of tlie clip 20, the latter being fitted-,over the edgeo t ingscrew 21 for securing the spring and in he lens and provided witha astenusing the clip 20 the usual parts are omitted, v

and therefore the loops may be placed close to the inner edges of the lenses to reduce the pupillary .distance of the lenses.

` The combined action of the horizontal and vertical lloops or bends in the spring aord ample resiliency to "enable the lenses to be operated in separating and proximating 'the guards, and the extended length of the spring is taken up' between the lenses by forming lit into the vertically-arranged loops or'bends; and this enables a narrow bridge spring having a considerable length of material to .be employed which will permit va wide range of adjustment by then optician in tting the eyeglasses to suit lthe pupillary distance of the wearers eyes that may vary considerably, and by forming the extended length of the bridge into the vertical loops extending .transversely of the lenses, the bridge will possess ample stiness and rigidity to insure firmness of the eyeglasses when 'supported on the wearers nose, and this is particularly advantageous `when flat stock is employed and the material is doubled edgewise to form these vertical loops.-

When it is desirable to .vary the pupillary distance between the lenses, the optician may apply the pincers to the vertical loops and twist them so as to offset the upper and lower arms' of each loop, and in this way the width of the spring may be increased or decreased as desired.

I claim as my invention:

1.4 In eyeglasses, thelcombination with the,

lenses, of a bridge connecting the lenses hav-` ing its ends bent alternately into horizontal and vertical loops the latter having their arms arranged transversely to the plane of the lenses,^said loops being arranged intermediate the attaching ends and the central portion.

2. In eyeglasses, the combination with the lenses, of a bridge spring connecting themV composed of iat material having horizontal iiatwise, and vertical loops formed by doubling the material edgewise and transversely to the plane of the lenses.

3. In eyeglasses, the combination with the lenses, of a bridge connecting them and having a central portion, horizontal andvertical loops at the ends of the central portion, formed by bending the material alternately fiatwise and edgewise, the edgewise loops being transverse to the plane of the lenses.

4. In eyeglasses, the combination with the lenses, and the attaching devices thereon, of a bridge for connecting the lenses embodying a central portion having its ends extended rearwardly and doubled forwardly to form horizontal bends at each side of the central ortion, the free ends of the horizontal bends eing thence bent in a vertical plane ex- 65' tendmg transversely to the planeA of the loopsextending transversely of the. lane of the lenses forming continuations of-'t e hori -zontal loops and having upwardly-extend-` loops formed therein by bending the material 1 attaching devices.

5. In eyeglasses, the combination'with the lenses of a bridge connecting them and hav ing a central portion, and horizontal resili-A ent and vertical loopsl formed transversely to the plane of the lenses ,at the ends of the lenses and attached at their free ends to the .central portion, the ends of the vertical loops forming vattaching arms.

' 6. In eyeglasses, the combination with thel lenses, and the attaching devices thereon .for the guards and bridge, of a bridge spring connecting the lenses having substantially horizontal and vertical loops formed therein, the vertical loops being transverse "to the lane of the lenses and having their ends ormingl vertically-extending attaching arms for entering the correspondingly-formed attaching devices.

7. In eyeglasses, the combination with the lenses, and the attaching devices thereon for the guards and bridge, of a bridge spring connecting the lenses having substantially horizontal loops formed therein, and vertical ing attaching arms for entering the attaching devices.

8. In eyeglasses, the combination with the lenses, and attaching devices thereon ifpr the guards and biidge., of aj bridge spring connecting the lenses having substantially horizontal loops formed therein above the attaching devices, and vertical loopsextending ,around the attaching devices and provided with upwardlyextending attaching arms for entering the attaching devices.

9. In eyeglasses, the'comb'nation with the lenses, and the attaching devices thereon for the guards and bridge, o? a bridge spring hav# ing its central portion arched and its rearwardly-extending ends extended outwardly, forwardly, transverselyfof the lenses downwardly, rearwardly and upwardly and at-` tached to the attaching dev1ces.

10. In eyeglasses, the combination with the lenses the vertically opening boxes thereon and the guards, of a Spring composed of flat metal having thecentral connecting portion provided with the horizontal U-shaped loops open at the iront and arranged between the lenses and above the boxes and the attaching arms entering lthe boxes.

l1. In eyeglasses, the combination with A the lenses, the vertically-extending boxes thereon arranged between the lenses, and

'the guards, of a spring composed of flat metal arranged over the lens attaching ing `devices and a spring bridge havin loops evices thence extending downwardly on one side of the lens attaching devices and secured to the latter.h

13. In an eyeglass mounting, lens attachingdevices having vertically arranged seats,

and a :spring bridge having its brid ng ortionarran ed in a planeiny front o the ens attaching evices and formed with a U-sha ed bend at each end, one arm of each bend belng arranged infront of one of the lens attachin devices yand the other arm being connecte with one of the vertically arranged seats.

14. In an eyeglass mounting, a lens attachingdevice having a vertically arranged seat,

. and a s ring bridge having a loop therein locatedectly above the lens attachin device and an u wardly extending attac 'ng armseated in t e vertically arranged seat.

15. In an eyeglass mounting, a lens attachingdevice, and a spring bridge having a vertically disposed attaching arm secured to the attaching device, and a forwardly opening horizontal loop arran ed directl above the attaching device and t e end of t e attaching arm.

16. In an eyeglass mounting, a lens attaching device and a spring bridge comprising a brldging portion arranged in a plane above the lens attaching device, a vertical attaching arm and a connecting portion between it and the bridgin portion arranged in front of the lens attac 'ng device.

17. A spring bridge comprising a bridging ortion, loops arranged at the ends of theridging portions, and attaching ends ex-v tendln toward the loops at their free ends. 18. spring bridge comprising a bridging portion, loops arranged at the ends of the ridging portion and upwardly -extending attaching arms below the loo s.

' L O F. ADT. Witnesses:

F. F. CHURCH, G. WILLARD RICH. 

